Revenue is a rough estimate from public install counts × genre ARPD — order of magnitude only.

Agar.io

Play online with players around the world as you try to become the biggest cell of them all! Control your tiny cell and eat other players to grow larger! But watch out: players bigger than you will be trying to make you their lunch. Survive and eat long enough to become the biggest cell in the game! With new controls developed especially for touchscreens, agar.io offers the same fun gameplay that millions have already enjoyed on PC. Play online in free-for-all action and use splitting, shrinking and dodging tactics to catch other players - or avoid them! Use a variety of special secret skins with the right username! This game includes optional in-game purchases (includes random items). Become a beta tester: http://goo.gl/cGmbd8